A stink. A stench. A foulness in her mind, dreadful and unforgiving. A compost of horrible ideas and rotted thoughts that made her want to take our her brain and wash it

A stink. A stench. A foulness in her mind, dreadful and unforgiving. A compost of horrible ideas and rotted thoughts that made her want to take our her brain and wash it. (Terry Pratchett, I Shall Wear Midnight)